Morphology of Polymers - Development of Electron Microscopy Methods

Abstract

Most polymeric materials used today are not simple homopolymers, but consist of more than one polymer, which lead to morphologies of different length scale and shape. It is important to receive knowledge of the morphologies because the properties of the materials change depending on the structure. This thesis describes methods developed to study polymer morphologies by electron microscopy and also how to make a correct interpretation of the result. TEM (Transmission Electron Microscope) and SEM (Scanning Electron Microscope) are described for studying morphologies in PVC (polyvinyl chloride) resin, polymer blends, compatibilizer in polymer blends, latex particles, latex films and bitumen/polymer blends. Following polymer blends were studied: Carbon black filled NBR/EPDM (nitril butadiene rubber/ethylene-propylene-diene terpolymer), PP/PA (polypropylene/polyamid) Modified with SEBS-MA (polystyrene-block-poly(ethylene-stat-butylene)-block-polystyrene) modified by grafting with maleic anhydride, PS/PA (polystyrene/polyamide) compatibilized by a PS/PEO (polystyrene/poly(ethylene oxide)) grafted compatibilizer. Waterborne two-phase latexs are used as binding material in paints, adhesives, paper and other coatings. Methods to examine the morphology of the particles and the films in TEM were developed and PS/PMMA (polystyrene/poly(methacrylate)) and PS/PI (polystyrene/polyisoprene) was studied. Bitumen roofing material is improved by mixing the bitumen with polymers. The morphology of bitumen/SBS (polystyrene-block-butadien) was studied by fluorescence microscope, SEM and TEM and the results were compared.

• author: Hassander, Helen
• supervisor: [unknown] [unknown]
• opponent: Professor Gedde, Ulf, KTH, Stockholm
• organization: Centre for Analysis and Synthesis
• publishing date: 2004
• type: Thesis
• publication status: published
• subject: Chemical Sciences
• keywords: SEM, TEM, polymer, electron microscopy, Polymer technology, biopolymers, Polymerteknik
• pages: 150 pages
• defense location: Centre for Chemistry and Chemical Engineering, lecture hall D, Lund Institute of Technology
• defense date: 2004-12-03 13:15:00
• ISBN: 91-7422-068-3
• language: English
• LU publication?: yes
• additional info: Article: I EM Studies of Morphology of Rigid PVC ResinsHassander, H., Törnell, B.Acta Polytechnica Scandinavia Ch 143, (1980), 3-20. Article: II Methods for Testing Morphology-Property Relationships in Rubber BlendsHassander, H., Törnell, B.Polymer Testing 5 (1985), 11-25 Article: III Electron Microscopy Methods for Studying Polymer Blends-Comparison of Scanning Electron Microscopy and Transmission Electron MicroscopyHassander, H.Polymer Testing 5 (1985), 27-36 Article: IV Morphology of Two-Phase Polystyrene/Poly(methyl-methacrylate) Latex Particles Prepared under Different Polymerization ConditionsJönsson, J-E., Hassander, H., Jansson, L.H., Törnell, B.Macromolecules 24 (1991), 126-131 Article: V Morphology of Two-Phase Latex Particles Studied by TEMHassander, H., Karlsson, O., Wesslén, B.ICEM 13-PARIS, 17-22 July (1994), 1215 Article: VI On the Macro- and Microphase Separation of Compatibilizers in Immiscible Polymer BlendsJannasch, P., Hassander, H., Wesslén, B.Journal of Polymer Science Part B-Polymer Physics, (1996), 34(7), 1289-1299 Article: VII Effect of the Mixing Procedure on the Morphology and Properties of Compatibilized Polypropylene/polyamide BlendsOhlsson, B., Hassander, H., Törnell, B.Polymer, (1998), 39(20), 4715-4721 The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041)
• id: d217f1f6-5ffd-404d-8913-770a926a130e (old id 467641)
• date added to LUP: 2016-04-04 10:58:38
• date last changed: 2018-11-21 21:01:55